The Debianoid upstart repo does not install upstart scripts (there is no /etc/init/mongodb script) but installs a /etc/init.d/mongodb-10gen script.

I am using `deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen` and `sudo apt-get install mongodb-10gen`

This makes the documentation incorrect as well:

To configure these packages beyond the defaults, have a look at /etc/mongodb.conf, and/or the initialization script, (/etc/init.d/mongodb on older, non-Upstart systems, /etc/init/mongodb.conf on Upstart systems).

Since the /etc/init/mongodb.conf file is missing as well as /etc/init.d/mongodb is actually /etc/init.d/mongodb-10gen